Guro Cast Red Iron Tea Cup Inner Enamel Coating Sigma Guro's team believes in bringing people together. Whether it's the taste and smell of your favorite dish, the feeling of belonging or the reason for coming together. No matter if at home or in front of a campfire, it's the opportunity to create something special. Thick, heavy iron casting with an exceptional temperature regulating power and heat retention, providing even distribution of heat & constant temperature even while away from its source of heat. Triple layer porcelain enamel interior coating preserves the pure taste of your tea and increases the tetsubin cup's durability and rust resistance. Traditional Japanese Tetsubin cup. Great for outdoor and recreational purposes, camping and home use. Popular with collectors, the Tetsubin range widely in sizes (0.5L-1.8L), shapes and colors. Explore our Amazon store for a variety of up to 20 Testsubin styles and colors.